2 Chronicles 24:25-26

25When they withdrew from him—for they left him very sick—his own servants plotted against him because of the blood of the sons of Jehoiada the kohen, and assassinated him on his bed. He died and was buried in the city of David—but not in the tombs of the kings.

26These men conspired against him: Zabad son of Shimiath the Ammonitess and Jehozabad son of Shimrith the Moabitess.